Advice for external power for fueling system

[Chip Oidos]

Thanks again for all the advice.
This is what I ended up with [as seen in the photos]: The rings on the left go to the battery. There is an inline fuse. The connector on the right will go to a battery tender. I will make a similar connector for the diesel fuel pump. The yellow connectors are Anderson connectors with a weather proof boot. The grey housing is a 6 pin trailer outlet that will accommodate 12 gauge wire.

 

[Chip Oidos]

Finally got it done. Here is the finished product.